CN103900326B - A kind of keep the device of refrigerator internal and external pressure balance, installation method and refrigerator - Google Patents
A kind of keep the device of refrigerator internal and external pressure balance, installation method and refrigerator Download PDFInfo
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- CN103900326B CN103900326B CN201210572421.2A CN201210572421A CN103900326B CN 103900326 B CN103900326 B CN 103900326B CN 201210572421 A CN201210572421 A CN 201210572421A CN 103900326 B CN103900326 B CN 103900326B
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Abstract
The invention provides a kind of device of refrigerator internal and external pressure balance, installation method and refrigerator of keeping, described device includes breather and check valve, and one end of described breather connects described check valve.Present invention also offers the installation method of said apparatus and refrigerator.The device keeping refrigerator internal and external pressure balance of the present invention, it is possible to real-time guarantee refrigerator box body internal and external pressure balance, it is not necessary to manual operation, ensures to seal simultaneously, is absent from the phenomenon of cold draining, it is ensured that refrigeration, and cost is low, and simple in construction, it is convenient to change.
Description
Technical field
The invention belongs to refrigerator technical field, specifically, relate to a kind of keeping the device of refrigerator internal and external pressure balance, installation method and refrigerator.
Background technology
Medical treatment refrigerator is in user's use procedure, along with the reduction of the temperature inside the box, in case, atmospheric pressure reduces, lower than the atmospheric pressure of case external environment, cause the inside and outside air pressure difference acting in door body, therefore user's difficulty, especially super low-temperature refrigerator when opening the door, minimum in its case can reach subzero 86 degrees Celsius, under extreme case, user need to could open door by instrument, so needing to install the device keeping internal and external pressure balance on refrigerator so that door body is opened conveniently.The method of current existing maintenance internal and external pressure balance, although can holding tank internal and external pressure balance, but there is the problem of cold draining, namely in the excessive entrance case of case outer air, cause that refrigeration is not good.
How to solve disadvantages mentioned above, be then the present invention problem that to need solution badly.
Summary of the invention
The invention provides and a kind of keep the device of refrigerator internal and external pressure balance, installation method and refrigerator, it is possible to solve the problem easily occurring cold draining phenomenon to cause refrigeration not good that prior art exists.
For solving above-mentioned technical problem, on the one hand, the present invention provides a kind of device keeping refrigerator internal and external pressure balance, including breather and check valve, one end of described breather connects described check valve.Check valve opens or closes according to refrigerator inside and outside differential pressure, thus realizing the unimpeded of breather or closing.
Further, described check valve includes valve casing and is positioned at the spool within valve casing, and described valve casing includes upper casing and lower casing, described upper casing and lower casing buckle and is integrated, and described spool top is provided with sealing.
Further, it is provided with valve seat inside described lower casing, it is provided with guide post inside described upper casing, the sealing lower end of described spool contacts with described valve base sealing, the sealing upper end of described spool is provided with blind hole, described spool is sleeved on described guide post by this blind hole, and moves up and down along described guide post and realize opening or closing of described check valve.
Because the temperature of refrigerator is well below the external world, so the pressure in refrigerator case is generally smaller than ambient pressure, when spool is moved up by ambient pressure promotion, the sealing of spool leaves the valve seat within lower casing, one-way valve opens, the through hole making breather is opened, now outside air enters in case, when reaching case internal and external pressure balance in partial air entrance case, spool relies on the weight of self to reset, and makes the sealing of spool seal contact all the time on valve seat, closed check valve, the through hole of breather is also closed accordingly, it is ensured that box sealing.When in case, pressure drops to a certain degree, spool is promoted by ambient pressure again and is moved upward, the like, spool pumps, and carrys out the through hole inside and outside break-make connection refrigerator by the movement of spool, to reach to regulate the pressure balance inside and outside refrigerator.
Further, the bottom of described spool is fixed with screw rod, the lower end attaching nut of described screw rod.Nut adds weight during valve core reset, and strengthens the sealing of spool and the compactness of valve seat.
Further, in order to strengthen sealing, it is provided with groove on the downside of the sealing of described spool, in described groove, is provided with sealing rubber ring.
Further, the side interference fit of the upper casing of described breather and described check valve connects.
Further, the excircle of the described breather side of described upper casing connection arranging engaging lug, described engaging lug is provided with installing hole.
Another further aspect, the present invention provides the installation method of the device of above-mentioned maintenance refrigerator internal and external pressure balance, described refrigerator includes door body, described door body includes door lining and door shell, arranging the through hole of correspondence on described door lining and door shell, the installation steps of the device of described maintenance refrigerator internal and external pressure balance are as follows:
1) by described rubber ring sleeve groove on the downside of the sealing of described spool, nut is installed on the screw rod of spool bottom, then valve core housing is installed on the guide post within upper casing, then upper casing and lower casing are snapped connection；
2) described breather is connected with the upper casing interference fit of described check valve；
3) through hole that described breather is arranged on door shell and door lining, is then fixed on upper casing on described door shell.
On the other hand, the present invention also provides for a kind of refrigerator, adopts the device of the above-mentioned maintenance refrigerator internal and external pressure balance of the present invention.
Wherein, the device of described maintenance refrigerator internal and external pressure balance is arranged in the door body of described refrigerator.
The device keeping refrigerator internal and external pressure balance that the present invention proposes, guarantee refrigerator box body internal and external pressure balance that can be real-time, do not need manual operation, during installation, breather is inserted from door shell, penetrate on door lining, the upper casing of check valve is screwed on door shell, then door body is foamed.When refrigerator box body memory, external memory is when pressure differential, this pressure differential can promote spool to move up, and enables case outer air to enter in case by door body, and the inside and outside pressure balance of holding tank does not affect again refrigeration simultaneously.
When reaching case internal and external pressure balance in minute quantity air entrance case, spool can be retracted original position due to its weight by the nut of spool bottom, makes the seal with elastometic washer in seal spool subordinate portion on the valve seat within lower casing, it is ensured that box sealing；When in case, pressure drops to a certain degree, nut is promoted band movable valve plug to be moved upward by pressure, and case outer air enters box house by the hole of breather, thus guard box internal and external pressure balance.
The breather of different length according to the difference of door shell thickness, can be matched so that the apparatus module keeping refrigerator internal and external pressure balance of the present invention.
The present invention can progressively be generalized to other needs guard box inside and outside air pressure balance, ensures again on all kinds of refrigerators of refrigeration, and according to different door shell thickness, can adjust the length of breather, meets the instructions for use of different-thickness door shell.
Compared with prior art, advantages of the present invention and having the benefit effect that
The device keeping refrigerator internal and external pressure balance of the present invention, it is possible to real-time guarantee refrigerator box body internal and external pressure balance, it is not necessary to manual operation, ensures to seal simultaneously, is absent from the phenomenon of cold draining, it is ensured that refrigeration.Of many uses, can be used for different case equipment and different door shell thickness, it is also possible to as the case may be, it is possible to be arranged in door body by breather or other positions such as case shell.Cost of the present invention is low, simple in construction, and it is convenient to change.
Accompanying drawing explanation
Fig. 1 is the package assembly schematic diagram of the device specific embodiment of maintenance refrigerator internal and external pressure balance of the present invention；
Fig. 2 is the half sectional view of the A-A of Fig. 1；
Fig. 3 is the detonation configuration schematic diagram of the device specific embodiment of maintenance refrigerator internal and external pressure balance of the present invention；
Fig. 4 is the door body structure schematic diagram of the device specific embodiment installing maintenance refrigerator internal and external pressure balance of the present invention；
Fig. 5 is the B-B sectional view of Fig. 4；
Fig. 6 is the partial enlarged drawing at the I place of Fig. 5.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
The present invention is directed to the equipment keeping internal and external pressure balance of current refrigerator especially ultralow temperature medical treatment refrigerator and there is cold draining phenomenon, cause the problem that refrigeration is not good, and a kind of device keeping refrigerator internal and external pressure balance is provided, it is possible to regulate the pressure inside and outside refrigerator in real time, and sealing effectiveness is fine.Concrete, a kind of device keeping refrigerator internal and external pressure balance, including breather and check valve, one end of described breather connects described check valve.
With reference to shown in Fig. 1 and Fig. 2, a kind of device keeping refrigerator internal and external pressure balance, including breather 1 and check valve 2, one end of breather 1 connects check valve 2.The through hole 11 of breather 1 relies on opening or closing of check valve 2 and unimpeded or close.
As Figure 2-3, check valve 2 includes valve casing 3 and is positioned at the spool 4 within valve casing 3, and valve casing 3 includes upper casing 31 and lower casing 32, upper casing 31 and lower casing 32 buckle and is integrated, and spool 4 top is provided with sealing 41.
Lower casing 32 is internal is provided with valve seat 321, upper casing 31 is internal is provided with guide post 311, sealing 41 lower end of spool 4 seals with valve seat 321 and contacts, sealing 41 upper end of spool 4 is provided with blind hole 411, spool 4 is sleeved on guide post 311 by this blind hole 411, and moves up and down along guide post 311 and realize opening or closing of check valve 2.
The bottom of spool 4 is fixed with the lower end attaching nut 5 of screw rod 42,42 screw rod.Nut 5 adds weight when spool 4 resets.
In order to strengthen sealing, being provided with groove 412 on the downside of the sealing 41 of spool 4, be provided with sealing rubber ring 6 in groove 412, rubber ring 6 seals contact at valve seat 321 place.
The side interference fit of the upper casing 31 of breather 1 and check valve 2 connects.
Specifically, time inside and outside refrigerator box body without pressure reduction, rubber ring 6 seals contact at valve seat 321 place, seals up through hole 11；When the pressure in refrigerator case is less than ambient pressure, nut 5 under the effect of the pressure, is moved upward by promotion, band movable valve plug 4 also moves upward, and now, rubber ring 6 lifts off a seat 321 along with spool 4, check valve 2 is opened, and now, outside air can pass through through hole 11 and enter in refrigerator box body.When reaching case internal and external pressure balance in partial air entrance case, spool 4 can be retracted original position due to its weight by the nut 5 of spool 4 bottom, makes the rubber ring 6 of spool 4 sealing bottom be sealed on valve seat 321, and check valve 2 is closed, it is ensured that box sealing；When in case, pressure drops to a certain degree, nut 5 is promoted band movable valve plug 4 to move up by pressure again, the like, spool 4 pumps.The through hole 11 inside and outside break-make connection refrigerator is carried out, to reach to regulate the pressure balance inside and outside refrigerator by the movement of spool 4.
Wherein, upper casing 31 connects and arranges engaging lug 312 on the excircle of breather 1 side, and engaging lug 312 is provided with installing hole, is fixed on door shell 72 by upper casing 31 through installing hole by screw.
The installation method of the device of above-mentioned maintenance refrigerator internal and external pressure balance is as follows:
As Figure 4-Figure 6, refrigerator includes door body 7, and door body 7 includes door lining 71 and door shell 72, door lining 71 and arrange mutually corresponding through hole on door shell 72, and namely the device of above-mentioned maintenance refrigerator internal and external pressure balance is arranged on the through hole of door body 7, and installation steps are as follows:
1) rubber ring 6 is enclosed within the groove 412 on the downside of the sealing 41 of spool 4, nut 5 is installed on the screw rod 42 of spool 4 bottom, then spool 4 set is installed on the guide post 311 within upper casing 31, then upper casing 31 and lower casing 32 are snapped connection；
2) breather 1 is connected with upper casing 31 interference fit of check valve 2；
3) through hole that breather 1 is arranged on door shell 72 and door lining 71, is then fixed on upper casing 31 on door shell 72.
A kind of refrigerator, adopts the device of above-mentioned maintenance refrigerator internal and external pressure balance, and adopts above-mentioned installation method to install on freezer door body 7.
Certainly, said apparatus can also be arranged on other positions of refrigerator case, concrete installation method be arranged in door body 7 identical.
The above, be only presently preferred embodiments of the present invention, is not the restriction that the present invention makees other form, and any those skilled in the art are changed or be modified as the Equivalent embodiments of equivalent variations possibly also with the technology contents of the disclosure above.But every without departing from technical solution of the present invention content, according to any simple modification, equivalent variations and remodeling that above example is made by the technical spirit of the present invention, still fall within the protection domain of technical solution of the present invention.
Claims (8)
1. the device keeping refrigerator internal and external pressure balance, it is characterized in that: include breather and check valve, one end of described breather connects described check valve, described check valve includes valve casing and is positioned at the spool within valve casing, described valve casing includes upper casing and lower casing, described upper casing and lower casing buckle are integrated, and described spool top is provided with sealing；
It is provided with valve seat inside described lower casing, it is provided with guide post inside described upper casing, the sealing lower end of described spool contacts with described valve base sealing, the sealing upper end of described spool is provided with blind hole, described spool is sleeved on described guide post by this blind hole, and moves up and down along described guide post and realize opening or closing of described check valve.
2. keep the device of refrigerator internal and external pressure balance according to claim 1, it is characterised in that: the bottom of described spool is fixed with screw rod, the lower end attaching nut of described screw rod.
3. keep the device of refrigerator internal and external pressure balance according to claim 1, it is characterised in that: it is provided with groove on the downside of the sealing of described spool, in described groove, is provided with rubber ring.
4. keep the device of refrigerator internal and external pressure balance according to claim 1, it is characterised in that: the side interference fit of the upper casing of described breather and described check valve connects.
5. keep the device of refrigerator internal and external pressure balance according to claim 4, it is characterised in that: arranging engaging lug on the excircle of the described breather side of described upper casing connection, described engaging lug is provided with installing hole.
6. described in any of the above-described claim, keep the installation method of the device of refrigerator internal and external pressure balance, it is characterized in that: described refrigerator includes door body, described door body includes door lining and door shell, arranging the through hole of correspondence on described door lining and door shell, the installation steps of the device of described maintenance refrigerator internal and external pressure balance are as follows:
1) by described rubber ring sleeve groove on the downside of the sealing of described spool, nut is installed on the screw rod of spool bottom, then valve core housing is installed on the guide post within upper casing, then upper casing and lower casing are snapped connection；
2) described breather is connected with the upper casing interference fit of described check valve；
3) through hole that described breather is arranged on door shell and door lining, is then fixed on upper casing on described door shell.
7. a refrigerator, it is characterised in that adopt the device keeping refrigerator internal and external pressure balance according to any one of claim 1-5.
8. refrigerator according to claim 7, it is characterised in that: the device of described maintenance refrigerator internal and external pressure balance is arranged in the door body of described refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210572421.2A CN103900326B (en) | 2012-12-26 | 2012-12-26 | A kind of keep the device of refrigerator internal and external pressure balance, installation method and refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210572421.2A CN103900326B (en) | 2012-12-26 | 2012-12-26 | A kind of keep the device of refrigerator internal and external pressure balance, installation method and refrigerator |
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| Publication Number | Publication Date |
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| CN103900326A CN103900326A (en) | 2014-07-02 |
| CN103900326B true CN103900326B (en) | 2016-06-29 |
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| CN201210572421.2A Active CN103900326B (en) | 2012-12-26 | 2012-12-26 | A kind of keep the device of refrigerator internal and external pressure balance, installation method and refrigerator |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500433B (en) * | 2016-12-14 | 2022-03-01 | 天津市天商冰源科技发展有限公司 | Freezer atmospheric pressure equalizer |
| CN108592494A (en) * | 2018-03-22 | 2018-09-28 | 海信容声(广东)冷柜有限公司 | A kind of freezer box air pressure balance structure and refrigerator |
| CN110553458A (en) * | 2019-09-29 | 2019-12-10 | 海信容声(广东)冷柜有限公司 | Pressure balancing device for refrigerator |
| CN110906634A (en) * | 2019-12-08 | 2020-03-24 | 江苏星星家电科技有限公司 | Little frost atmospheric pressure balancing unit of refrigerator |
Citations (8)
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| JPH043875A (en) * | 1990-04-18 | 1992-01-08 | Mitsubishi Electric Corp | Refrigerator |
| JPH08233440A (en) * | 1995-02-28 | 1996-09-13 | Daiwa Reiki Kogyo Kk | Breather valve structure for internal pressure adjustment for refrigerator/freezer |
| CN2392144Y (en) * | 1999-09-14 | 2000-08-16 | 殷兴武 | Manual pneumatic adjusting valve for refrigerator |
| CN101688722A (en) * | 2007-05-08 | 2010-03-31 | Bsh博世和西门子家用器具有限公司 | Housing for a refrigerator device |
| CN201748748U (en) * | 2010-05-28 | 2011-02-16 | 合肥美的荣事达电冰箱有限公司 | Refrigerating device |
| CN201828101U (en) * | 2010-09-30 | 2011-05-11 | 青岛营上电器有限公司 | Air pressure balance valve of freezer door body |
| CN101512265B (en) * | 2006-08-29 | 2011-10-05 | Bsh博世和西门子家用器具有限公司 | Refrigerator with pressure equalisation valve |
| CN203036952U (en) * | 2012-12-26 | 2013-07-03 | 海尔集团公司 | Device for balancing external and internal pressure of refrigerator and refrigerator |
-
2012
- 2012-12-26 CN CN201210572421.2A patent/CN103900326B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH043875A (en) * | 1990-04-18 | 1992-01-08 | Mitsubishi Electric Corp | Refrigerator |
| JPH08233440A (en) * | 1995-02-28 | 1996-09-13 | Daiwa Reiki Kogyo Kk | Breather valve structure for internal pressure adjustment for refrigerator/freezer |
| CN2392144Y (en) * | 1999-09-14 | 2000-08-16 | 殷兴武 | Manual pneumatic adjusting valve for refrigerator |
| CN101512265B (en) * | 2006-08-29 | 2011-10-05 | Bsh博世和西门子家用器具有限公司 | Refrigerator with pressure equalisation valve |
| CN101688722A (en) * | 2007-05-08 | 2010-03-31 | Bsh博世和西门子家用器具有限公司 | Housing for a refrigerator device |
| CN201748748U (en) * | 2010-05-28 | 2011-02-16 | 合肥美的荣事达电冰箱有限公司 | Refrigerating device |
| CN201828101U (en) * | 2010-09-30 | 2011-05-11 | 青岛营上电器有限公司 | Air pressure balance valve of freezer door body |
| CN203036952U (en) * | 2012-12-26 | 2013-07-03 | 海尔集团公司 | Device for balancing external and internal pressure of refrigerator and refrigerator |
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| Publication number | Publication date |
|---|---|
| CN103900326A (en) | 2014-07-02 |
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Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Qingdao, Shandong. Co-patentee after: Qingdao Haier Bio Medical Limited by Share Ltd Patentee after: haier group corporation Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Qingdao, Shandong. Co-patentee before: Haier Medical and Laboratory Products Co., Ltd. Patentee before: haier group corporation |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190130 Address after: 266555 Haier Industrial Park, Qingdao Economic Development Zone, Shandong Province Patentee after: Qingdao Haier Bio Medical Limited by Share Ltd Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Qingdao, Shandong. Co-patentee before: Qingdao Haier Bio Medical Limited by Share Ltd Patentee before: haier group corporation |
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| TR01 | Transfer of patent right |